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Influence of Citric Acid on Struvite Precipitation
Advanced Science Letters, 2017Struvite (MgNH4PO4 · 6H2 O) is a mineral deposit which can be commonly crystallized on the surface of process pipes, pumps, and other industrial equipment and hence influence the performance and maintenance cost. However, struvite is also phosphate minerals that can be used as resources in an industrial fertilizer.
Perwitasari, Dyah Suci +3 more
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Electrochemical Precipitation of Struvite in Acidic Environment
ECS Meeting Abstracts, 2019Phosphorus is a key element of fertilizers required for the food production chain worldwide. However, its global supply is limited to phosphate rocks, which is a non-renewable resource expected to last 50 to 300 years. Nutrients recovery from phosphorus-rich wastewater streams is a promising solution to conserve this valuable resource.
Ali Teymouri +3 more
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Effect of Seeding Materials and Mixing Strength on Struvite Precipitation
Water Environment Research, 2006Struvite precipitation has increasing interest as a technology for removing and recovering phosphorus from wastewater streams. Many chemical factors have been studied, such as optimum pH values and component‐ion molar ratios, yet, understanding of physical aspects is lacking.
Jun, Wang, Joel G, Burken, Xiaoqi, Zhang
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Spontaneous precipitation of struvite from aqueous solutions
Journal of Crystal Growth, 2000Abstract The kinetics of the spontaneous precipitation of struvite was investigated in aqueous supersaturated solutions containing stoichiometric concentrations of Mg 2+ , NH 4 + and PO 4 3− ions, ionic strenght 0.15 M NaCl and at 25°C in a batch, stirred reactor at constant supersaturation.
Petros Koutsoukos
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Struvite precipitation from urine with electrochemical magnesium dosage
Water Research, 2013When magnesium is added to source-separated urine, struvite (MgNH(4)PO(4)·6H(2)O) precipitates and phosphorus can be recovered. Up to now, magnesium salts have been used as the main source of magnesium. Struvite precipitation with these salts works well but is challenging in decentralized reactors, where high automation of the dosage and small reactor ...
Hug A, Udert KM
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REM NUT Ion Exchange Plus Struvite Precipitation Process
Environmental Technology, 2001Nutrients control technologies from wastewater are based on destructive technologies which defer the problem fromthe diluted liquid-phase (effluent) to a more concentrated waste (sludge) in the case of phosphates, or to nitrogen gas and/or volatile compounds in the case of ammonia.
L. Liberti, D. Petruzzelli, L. De Florio
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Struvite precipitation by soil and fresh water bacteria
Current Microbiology, 1992Struvite precipitation by 161 bacterial strains isolated from soil and fresh water was analyzed. The results showed that the ability to form struvite is not widespread among these bacteria. Struvite precipitation was influenced by environmental factors and could be enhanced by changing the experimental conditions.
M. Angustias Rivadeneyra +2 more
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Struvite precipitation using continuous flow reactor
AIP Conference Proceedings, 2019Due to population rapid growth, fertilizer industries have to increase the production to ensure food security causing faster non-renewable resource depletion. However, organic wastewater (cow urine) commonly contains high amount in NH4+ and PO43- is still underutilized and causing eutrophication and unpleasant odour problem.
Chandra Wahyu Purnomo +4 more
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Factors influencing urease driven struvite precipitation
Separation and Purification Technology, 2013The concern about phosphorus depletion is driving more efficient phosphorus use and recycling. In this context the precipitation of phosphate as struvite from wastewaters has recently gained considerable traction. This study investigates the influence of different parameters on the ureolytic phosphate precipitation (pH increase by means of urease ...
E. Desmidt +5 more
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Membrane filtration pretreatment preceding struvite precipitation
2020The ability of Microfiltration (MF) and Ultrafiltration (UF) technique for separation of organic matter in treatment of nutrient rich fluids is investigated in the study. Such separation is of great importance in case of performing magnesium-ammonium phosphate hexahydrate (struvite) precipitation as the struvite yield depends negatively on organic ...
Peeva, G. +4 more
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